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Operation
22 Owner’s Manual for 50 Hz Air-Cooled Generator Sets
•
Once mains power is returned, generator set will
shut down after one minute cool-down time.
Exercise
•
Will not exercise if generator set is already running
in either AUTO or MANUAL mode.
•
During exercise, controller will only transfer if
mains power fails during exercise for five seconds
(varies based on
Cold Smart Start ) and will switch
to AUTO.
Manual Transfer Operation
Manual actuation of transfer switch is required if elec-
tronic operation should fail.
Transfer to Generator Set Power Source
Proceed as follows to manually transfer to generator set
power source:
1. Verify generator set is in OFF mode.
2. Set MLCB (generator disconnect) to OFF (OPEN).
3. Turn off mains power supply to transfer switch
using means provided (such as a main line utility
breaker).
4. See Figure 3-8 . Manually actuate transfer switch
(A) to STANDBY position. See transfer switch
owner’s manual for correct procedure.
Figure 3-8. Typical Manual Transfer Switch Operation
5. Press MANUAL mode button on control panel to
crank and start engine.
6. Allow engine to stabilize and warm up for a few
minutes.
7. Set MLCB (generator disconnect) to ON
(CLOSED). Loads are now powered by standby
generator set.
Transfer to Mains Power Source
When mains power has been restored, shut down gener-
ator set and transfer to mains power source. Proceed as
follows to manually transfer to mains power and shut
down generator set:
1. Set main circuit breaker in distribution panel to
OFF (OPEN) to remove all loads from generator
set.
2. To shut down generator set:
– Allow generator set to run for 5 minutes at no
load.
– After 5 minutes, use emergency stop button to
shutdown generator set.
– Wait 15 minutes to allow internal temperature to
stabilize.
NOTE: Failure to follow this procedure may
expose user to hot surfaces. See Hot Surfaces in
Section 1.
3. Open lid and reset emergency stop alarm on con-
trol panel.
4. Set MLCB (generator disconnect) to OFF (OPEN).
5. Verify mains power supply to transfer switch is
turned off.
6. See Figure 3-8 . Manually actuate transfer switch
back to MAINS position. See transfer switch
owner’s manual for correct procedure.
7. Turn on mains power supply to transfer switch
using means provided.
8. Set main circuit breaker in distribution panel to ON
(CLOSED).
9. Press AUTO mode button on control panel.
10. Return MLCB (generator disconnect) to ON
(CLOSED).
11. Close and lock lid.
Do not manually transfer under load.
Disconnect transfer switch from all power
sources prior to manual transfer.
ISO000132
002565
A
The enclosure provides protection against
hot surfaces inside the generator set. Hot
surfaces may be present if the generator set
has been operating under a large load.
Do not open the generator set enclosure
while the generator set is running.
ISO000533